The driver's bail has been set at $50,000 (£29,779) and he could face more than a decade in prison if convicted.

Jeff Millea, Morgan's 36-year-old assistant, who was also in critical condition after the crash, has been upgraded to fair condition as well. Fellow comedian Ardie Fuqua Jr was also seriously injured.

Morgan, 45, starred alongside Tina Fey and Alec Baldwin in the comedy series 30 Rock and is a former regular on Saturday Night Live.

It was revealed last week that doctors were "optimistic" about his recovery.

Gossip website TMZ has so far refused to remove a video featuring footage of the crash site, which shows motorists stopping and pulling a body, believed to be Fuqua, from the wreckage of Morgan's limousine,

Last week actor and comedian Louis CK pleaded with TMZ on Twitter to "take it down", asking fans not to watch the video as it featured his friends who were in intensive care.